Walk on the road you will see every other distance will present a stud, but it is the octagon bar, often used in road traffic, which include road monitoring octagon bar. Small make up to the next we introduce the design requirements. 1. Octagon bar
walk on the road you'll see every other distance will present a stud, actually that is octagonal bar 【 Anise rod, mainly used for the installation of cameras and fixed lights, traffic signs is widely used as the main purposes. 】 , often used in road traffic, including surveillance octagon bar contains road. Small make up to the next we introduce the design requirements. 1. Octagon bar should be durable structure and its primary components, can absorb a certain amount of mechanical stress by 【 Mechanical stress, 机械应力) Refers to the object due to external causes, Stress and humidity change, etc. ) And deformation, within the object interact between the parts of internal force, in order to resist the external causes, and try to make objects from the deformation after the return to the former position. 】 , the electric stress and thermal stress' When temperature changes, the object due to external constraints and internal constraints between parts, make its can't completely free expansion stress. 】 Data structure, the data and electrical components should choose moisture-proof, since the explosion, fire or flame retardant products; 2. Octagon bar and its primary components of all the exposed metal appearance should choose hot dip galvanized layer protection, galvanized layer and thickness of not less than 55 microns; 3. Octagon bar and its primary component height to error' Error is a measure of value minus the reference value. 】 ±200毫米; 4. Octagon bar cross section and its primary components scale promised error of plus or minus 3 mm; 5. Octagon bar and its primary components are installed after the tower axis displacement promised error of plus or minus 5 mm; 6. Octagon bar and its primary components straight to 1/1000 of the error for the height of the tower; 7. Octagon bar scale should be coordinated and its primary components, outdoor cameras monitoring azimuth direction, outstanding positioning effect; 8. Steel structure of the connecting bolt should be brief and unified, standard of bolt should be not less than M10. Links should be loose prevention measures, and firmly secure; 9. Octagon bar and its primary components all weld welds should fit standard requirements, smooth appearance should be smooth, no porosity, slag, virtual welding and welding leakage faults; 10. Under the condition of meet the strength of the wind load, anise rod and the displacement of the top of the primary components ( Around the degree of value) Should not be less than 1/200 of the stud and its primary component height; 11. Octagon bar should have lightning protection function, and its primary components after chassis grounding bolt connected to the ground; 12. Anise rod shell and its primary components of not less than protection grade: IP55. Protection grade of stud and its primary components should meet the requirements of the outdoor use environment; 13. Octagon bar and its primary components should be able to achieve electric and manual lifting, lifting process should adhere to the uniform, smooth, safe, the lifting speed is 8 m/min, the motor power should be 450 w or less; Manually turn should be 40 n or less. m; 14. Octagon bar and its primary components shall be equipped with reliable grounding device, the grounding resistance should be 4 or less Ω; 15. Octagon bar and its primary components of outdoor control switch box should choose stainless steel case, and its appearance make pensu processing. Is the small make up for the octagon bar above the introduction of the design requirements, after the detailed introduction of small make up, expect this article can help to us, make us on